Angels and Insects (1995)

A drama directed by Philip Haas.
A scientist who has spent the last few years in the Amazon rain forest loses all of his worldly belongings on the way home, except for 2 rare butterflies. He gives these to a rich wildlife collector and is hired to catalog the collection. The scientist falls in love with the rich man's daughter and marries her. Her brother is a pompous ass and treats the scientist with no respect. The scientist then works on a book with one of the female servants. When he finds the brother raping the servant, the scientist knows that all is not right in this family.
The plot and characters were good and the style was decent. The pacing was slow as needed to show how the plot develops ever more clearly in the mind of the main character. The change that happens in this film is nothing to do with people changing what they do, but what they do being discovered by the outsider who is taken into their group. I'm rating this good.